Die lubricating apparatus



April 4, 1950 E. J. M iLVRIED 2,502,471

DIE LUBRICATING APPARATUS Filed Dec. 5, 1945 INVENTOR. EDWIN J. MCILVRIED ATTORNEYS Patented Apr. 4, 1950 UNITED STAT EIS QLF FiI CEt I .i f 2,562,471; r I a I, DIE LUBRICATING ABPARATUS Edwin- J. Mcllvried, CuyahogazEall's, Ohio; :1 e.

signor toThe- Vaughn Machinery Gompanygz Cuyahoga Falls, Ohio, at corporationVof-Ohio ApplicationDecemlber 5, lsrsgserismb. 6322919 4 Claimss- (01.205-259 The: present improvements relating: as indicate ed to: lubricating-apparatus" have more particularrregard to'the-lubrication-of dies for drawingl wire orilike elongatedLmetallic articles;

A's 'is; well rknown,zin the drawing of 'wire;it is desirable; in vfact necessary, thatlubricant should be supplied to-the latter at the point where it passes: through'the die-"to prevent over-heating bothof the-die :and of the-article being drawn. The usuali-practiceahas been to spray orsquirt the lubricant from'above 'or' one side into the die opening or OIltO thBEWlIB asit-entersthe same, SuchmethodJrequi-ring: the employment of supply conduits which clutterup the draw bench and obstructzthe-- workp Also, such method; in order tminsurethedesired result, requires the'use ofa considerable excess-2 of the lubricant;

Accordingly, one principal object ofthe pres ent invention is to provide a simple-and compact form of device for conducting the lubricant to a drawing die and: which will be disposed so as tobe entirely out of the way, i; e. permit unobstructed observation ofl'and 'accessto the drawing operation; At the same time-such lubricating device isz-adapted to serve the-further purpose. or hold ing-pthe die'in :place inits seat.

Toxthe-r accomplishment of thefor'egoing and related ends-,1 said invention then consists of the means hereinafter-fully described-and particularlyypointed-out inythezclaims;v The: annexed: drawing: and. the following rde' scription ,set forth" in detail certain; mechanism embodying the invention, such disclosedimeans constituting,a however,-' but one of various mechanical forms in which the principle of the in vention may be used.

T ,Insaidannexed.drawing: g

Fig. 1 is partly a side elevation and partly a section of a typical draw bench equipped with my improved diemechanism; and

Fig; 2ris a transverse vertical section'otthe same taken on the plane of. the line =212. on

As indicated, the draw bench illustrated in the several figures of the. drawing is to be taken as representative of any well known type of drawing mechanism for drawing elongated metallic articles. The one selected for illustration is that wherein a plurality of drums or capstans l are disposed in alignment, the wire W being passed around successive capstans a suflicient number of times to be frictionally engaged thereby and so capable of being drawn'through dies z (one only oflwhich isshown) that are suitably mounted between successive capstans. The latter are 'mountedf'on' spindles 3 journaled in a zsupportr' d whichga's shown; forms the'back wall of a trough-'- likei' frame: 5"-of "the draw bench, such spindlesandithezcorre'sponding capstans being individually driven; I

The die 2; asshowmis in theform oia disc -ancl will be: made of:the usualrhardened.steel or other material employed :for the purpose, such diechav ingraecentralt flaring opening fi, the larger di ameter'of which. is directed toward the entering wirev W'- assholwn in Fig. 1". Eachsuch di'e' is supported in proper position by :being seated ina corresponding circular recess 7 formed in-an upstan'din'g bITBJCkGt'LB' that 'rises -fromthe floor of the-'trougli-likefi'ame member 5, said 'bracketzbe ing 'latera'llycutfaway so a's not'to interfere with the free passage of the wire through the die-from one capstanzto'the next z Also as shown'innFig. 2

ascontinuous-unobstructed space is leftbetween theibracketsandfthe front wall 9 of said trough like-frame-"member:

The. latterisfurtherm'ore formed so as toprovide beneath the trough in question acontinuous longitudinally extending" chamber Ill, only the upper-portion: off-which appears in' the several figures" oft-he:- drawing, such chamber being olosedz'ofitan'drprdvided with means for supplying thereto? under desired pressure the lubricant which-it is "desiredinxturn-to-supply to the 'respec-' tiVBi'di6S-I'2 It will 'be'understood'that th'e lubri cant thus employed,- whether it be an oil *or "one ofthe .specialfcompositions-employed for the pur poserwill bei sufficiently fiuidin character sot-hat under pressure it may be caused to flow in-tlie manner whic'hrwillil be presently described as involved in "theoperation' of the apparatus.

Thei'uppenwall" of chamber I0 is formed aalongitudinally extending 'slot M which 'is aligned withath'eaxes ofthe series-of dies 2"when seated; in" the manner previously" described, in' their respective: supporting brackets 8; and; adjacent eachtrsuch birack'eti such wallis further formed withaaicircular boreLl Z -dispo'sed atan angle-so as to incline toward such bracket and the die 2 when seated therein. The lower portion of bore l2 extends downwardly into but not entirely through the 'slot I I, a continuation 13 of such bore of smaller diameter serving to connect the same with the chamber [0. Reciprocably held in bore I2 is a tubular member l4, a compression spring l5 being interposed between the lower end thereof and the lowerend of such bore where a shoulder is providedby reason of the smaller diameter of the continuation [3 of the latter. A stud, preferably in the form of a set screw [6 as shown, is

secured to the lower side of said tubular member Having now described the construction of my improved lubricating, apparatus, the manner of its operation will be briefly-set forth.

Assuming the chamber 10 is charged with lusion l3 of bore l2, thence through the compression spring l5 and tubular member M, from the Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention: 5

1. In a die retaining and lubricating apparatus, the combination of a support providing a die seat,

a die in such seat, a retainer formed with a passage for supplying lubricant to said die, means supporting said retainer for movement toward and away from said die, and spring means urging said retainer into engagement with said die for exerting pressure on said die for holding it in such seat.

upper end of which it will be supplied directly to the flaring end of die opening 6. The notch l8 :will preferably be slightly higher than the lower point of the arcuate face ll of the tubularmemher that is pressed against the die, so thatthe natural tendency of'the lubricant, supplemented by :the dragging action of the wire, will be to cause the same'to flow-into and through the die..

It will thus be seen that the lubricant is supplied exactly at the point where it is required and thatvery little excess amount of suchlubricant will be needed, all the splashing and mess that are incidental to present methods of die lubrication being eliminated. Such excess as there may be will, of course, be collected in the trough and can be returned for use or other disposal as desired.

As previously indicated, tubular member M at the same time that it serves to conduct lubricant to the die acts also as a retainer for the latter whereby it is held against accidental dislodgement from its seat in bracket8. However, should it be desired to remove the die for replacement or other purpose, this can be readily accomplished by simply pressing member .14 against spring IS. The stud l 6 will normally prevent the dislodgement of member I 4 from the bore when the die is thus removed, as-well as retain said member in proper axial position so that its upper end will contact with the die in the manner previously described. However, by removing stud I 6, the member M as well as spring l5 will be rendered entirely free for the purpose of disassembly of the apparatus. I

s, From the foregoing it will be seen that I have provided at the same time an extremely simple and yet highly efficient apparatus for lubricating the dies in a draw-bench. While the construction of such apparatus particularly lends itself to the type of draw-bench in which an aligned series of dies is utilized, the novel features of construction may of course be, equally well utilized in connection with an individually mounted die.

2. In a die retaining and lubricating apparatus, the combination of a support providing a vertically disposed die seat, a die in such seat, a retainer inclined upwardly toward said die and formed with a passage for supplying lubricant to said die, means supporting said retainer for movement toward and away from said die, and springmeans urging said'retainer into engagement with said die for exerting pressure on said die for holding it in such seat. f

3. In a die retaining and lubricating apparatus, the combination of a support providing a vertically disposed die seat, a die in such seat, a tubular retainer inclined upwardly toward said die, guide means provided with a bore'slidably receiving said retainer for movement toward and away from said die, spring means urging said retainer into engagement with said die for exerting pressure on said die for holding it in such seat, and inter-engaging'means on said retainer and guide means rendering said retainer nonrotatable in such bore.

4. In a' die retaining and lubricating apparatus, the combination ofa support providing a vertically disposed die seat, a die in such seat, a tubular retainer inclined upwardly toward said die, guide means provided with a bore slidably receiving'said retainer for movement toward and away from said die, spring means urging said retainer into engagement with said die for exerting pressure on said die for holding it in such seat, and inter-engaging means on said retainer and guide means rendering said retainer nonrotatable in such bore, said retainer being formed with a vertically disposed face in engagement with said die.

EDWIN J. McILVRIED.

REFERENCES CITED The following references are of record in .the file of this patent:

UNITED STATES PATENTS- 

